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  <link href="../showVector/css/show2D.css" rel="stylesheet" type="text/css">

  <title>2D向量演示</title>
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  <style>
    .re {
      color: red;
    }
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    <canvas id="mycanvas" class="canvasCSS">该浏览器不支持该页面，请换浏览器！</canvas>
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  <div class="divInput">
    请输入：<br>
    <div class="myexample">
      2*x+3*y=5<br>
      6*x-4*y=8
    </div>
    <table width="335" height="103">
      <tr>
        <td width="30" rowspan="2"><img src="image/left.png" width="30px" height="95px"></td>
        <td width="53" height="48"><input type="text" placeholder="a1" id="a1" name="a1"></td>
        <td width="53">x+</td>
        <td width="53"><input type="text" placeholder="b1" id="b1" name="b1"></td>
        <td width="53">y=</td>
        <td width="53"><input type="text" placeholder="c1" id="c1" name="c1"></td>
      </tr>
      <tr>
        <td><input type="text" placeholder="a2" id="a2" name="a2"></td>
        <td>x+</td>
        <td><input type="text" placeholder="b2" id="b2" name="b2"></td>
        <td>y=</td>
        <td><input type="text" placeholder="c2" id="c2" name="c2"></td>
      </tr>
    </table>
    <div>
      <img src="image/function.png" width="500px">
    </div>

    <div>
      x=<span id="rex" class="re">?</span><br>
      y=<span id="rey" class="re">?</span><br>
      <input name="button" type="button" class="bu" id="show" value="演示">
      <input name="button2" type="button" class="bu" id="refurbish" value="刷新">
    </div>
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